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UNITED STATES PATENT OFFICE EUGENE s. ALLEN, vor NEW YORK, N. Y.

SELF-LIGHTING GAS-BURN ER.

SPECIFICATION forming part of Letters Patent No. 416,707, dated December 10, 1889.

Application ledll'ehruary 16, 1888.V Serial No. 264,211. (No model.)

Burners; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompany ing drawings, making part of this specification.

My invention 'relates to what are known as self-lighting gas-burners, and is an improvement upon that species of self-lighting burner in which an auxiliary miniature burner is combined with the usual full-sized burner for-the purpose of maintaininga taper-light or minute gas-name, from which the main burner is lighted automatically, and which is alternately extinguished and relighted whenever the light from the said main burner is alternately turned on or shut off, all in a manner well understood by those familiar with the manufacture ofsuch self-lightin g burners.

I propose by my invention to provide for use a self-lighting burner of the species referred to which shall not only be more coinpact and simpler in structure than those heretofore made and more economic of manufacture, but which shall also be more efficient and desirable in practical operation; and to these main ends and obj ects my invention may be said to consist in the novel combinations of devices which will be found hereinafter more fully explained, and which will be more specically pointed out and defined in the claims of this specification. p

To enable those skilled in the art to which my invention relates to make and use selflighting burners of the species referred to, embracing (either wholly or partially) the features of improvement invented by me,I will now proceed to more fully describe said improvement, referring by letters to the accompanying drawings, which form part of this specification, and in which I have shown my invention carried out in that form in which I have so far successfully practiced it.

In the drawings, Figure l is a side view of a burner made according to my invention and shown with the gas turned on full to the main burner and cutoff from the auxiliary burner.l Fig. 2 is a similar view, but with thecage or shade of the auxiliary burner removed (in order to better show the latter) and with the gas entirely cut off from the main burner, while the auxiliary burner is lighted. Fig. 3 is a view looking at thecontrivance from the point of view indicated by the arrow at Fig. 2. Fig. 4L is a vertical central section at the line .fr @c of Fig. 3, but with the key of the cock in the position seen at Fig. l. Fig. 5 is a side view of the key of the cock detached; and Fig. v6 is a similar view of the said key, showing that portion which is about dialnetrically opposite to the portion exposed to view in Fig. 5.

In the several figures the same part is everywhere indicated by the same letter of reference.

A is the case or casing of the cock, which is formed with a downward extension at @for coupling with the gas-supply pipe, and with an upward extension at bfor connection with the main and auxiliary burners. Y

Within the casingA-is fitted to turn freely the tapering plug or key C of-the cock, which hand-piece c, and is also provided with a radially-projecting stop or safety pin at d, that plays within the recess e of the case A when the key is turned, (inthe usual manner,) and that is'held'in place endwise within the case A by the screw-cap f, (within which is located the tension-spring g,) all in the manner clearly shown.

D is the `main burner, which, as clearly shown, has a tip of about the usual size, but the body portion of which, unlike the body portions of burners heretofore used in such contrivances, is reduced in size so as to afford by its bore a tubular communication between the burner-tip and the extension b of a capacity simply suiicient for the passage of the gas that is fed through thev gasway of the key C of the cock. Iam `enabled to thus pact) by reason of affording a chamber for the gas within the unobstructed central bore lm, of the'key C.

E is the auxiliary or taper burner, which.,-

as shown, is in substance asmall tube havin 2 4 a minute bore and secured at its base in the extension Z) of the case of the cock. This burnertube E is arranged close up to the reduced body portion h of the main burner, and is of a height preferably such as to terminate at its upper end about where the swell or enlargement of the main burnerbegins, so that the iine pin-like ilame from said burner E will ascend in contact with or in impingement against the enlarged portion of burner D, whereby the ignition of gas escaping from the tip of burner D by the flame of burner E will always be insured, while at the same time the flame of the last-mentioned burner may be rendered so small as to consume a minimum amount of gas while kept burning and to make only the smallest possible amount of light.

G is a cage or perforated shade, made of metal and preferably secured in place in a detachable manner by being screwed (at its base) onto the upper end of the 'extension Z9, all as clearly illustrated. The function of this shade or cage is (as is well understood) simply to hide the light of the auxiliary burner E and at the same time permit a sufficient supply of air to said burner to insure combustion, and to do this said shade G may have a row of enlarged holes near its base, as seen at 1', which are located below the llame, and hence through which little or no light will be shed. Of course, in lieu of this perforated metallic shade,a glassor other transparent or translucent shade may be used where it is desired that the auxiliary burner shall shed more light in the room in which the gas-burner may be located.

The key O has a central bore m, preferably passing entirely through it, that forms a gaschamber that is always in communication with the bore of the extension a, which is connected to the gas-supply pipe, the said gas-chamber performing the function of the usual large space or chamber formed in the body of the main burner as heretofore constructed and enabling me to reduce the size of the said body portion of the main burner,

as and for the purpose hereinbefore mentioned. This gas-chamber m of the key C is, however, eectually closed (in the case shown) at one end by the screw k, by means of which the wooden or other hand-piece c of the cock is fastened to the key. The other end of the bore or gas-chamber m of the key is closed by a set-screw Z, which also serves, in a manner to be presently explained, to adjust or regulate the supply of gas to the auxiliary (or lighting) burner E, the said screw Zo entering the bore or chamber m to a sufficient distance only to effect the proper securement of the hand-piece cwithout unnecessarily reducing the size or capacity of said gas-chamber. Passing diametrically through the body of the key of the cock is a round hole n,

which serves as a gasway or passage of com-- munication between the bore of the extension a and the bore 'm of the key, and also be` tween said bore and the bore of thebody port-ion hof the main burnerD, and by turning the key C axially (in the .usual manner) the supply of gas afforded from ct through hole n to the bore m, and thence through said hole to the burner D, is cut off and turned on as the upper end of said hole n may be turned into and out of line with the bore of the extension ZJ, (of which latter bore vthat of the burnerbody h is practically an upward extension g) but the turning thus of the key to supply to and cut oif from `the burner D the gas does not interfere with a constant communication between the extension a and the bore or chamber m of the key, because in the lower portion of the peripheral surface of the key.

C (see Fig. 6) is formed a circumferential groove or channel o, which communicates with the lower end of the hole n, and which forms an open communication between said hole and the upper end of the bore in extension aafter the key may have been turned so as to throw said hole n clear out of line with the bore of the extension d. Besides the hole n, thus arranged and operating, there are in the key C two other holes p and q, each of which, however, extends only radially from the central bore or gas-chamber m outward to the periphery of the key` (see Fig. 5,)and both of which operate (as will be presently explained) to form a ga'sway or communication between the central bore .or gas-chamber m of the key (that is always full of gas) and the auxiliary burner E. These radially-arranged holes p and q are preferably arranged some distance apart, as shown, and with their IOC outer ends out of line, and in the periphery of the key is formed a slight channel or recess r, (see Fig. 5,) one end of which communicates with the outer end of hole q, and the other end of which extends close to (but does not communicate with) the outer end of hole p.

The set-screw Z is arranged so that if turned clear in, or home, its inner end will almost or quite close up the inner end of the hole q, or practically close the communication between said hole and the bore m of the key, and therefore it will be seen by adjusting this screw Z in or out the capacity of the hole q as a means of supplying gas from the bore m' to the peripheral channel or gasway r of the key may be regulated at pleasure and to suit the conditions of the main gas-supply under which the self-lighting-burner contrivance may have to be used.

Now, bearing in mind the foregoing description of the parts and their functions, the following explanations will, I think, make perfectly clear the operation of the improved contrivance made the subject of this application.

With the key turned in the position illustrated at Fig. l, the hole n is axially in line with the coincident bores of the extensions a and b and of the body portion h 0f the main burner, so that a full supply of gas is turned onto said burner to produce the light vin the usual manner, and at the same time IIO sage-ways occurs-viz., as the. upper end of the hole n is turned out of line with the bore communicating with the main burner D, so as to completely cut off the supply of gas from said burner, the outer end of the radial hole 1J comes into line with the bore of the auxiliary burner E, so as to aiford an ample supply of gas to. said auxiliary burner, and the relative arrangement of the upper ends of the said holes n and p are such that the communication between p and the auxiliary burner will be made an instant after the communication between n and the main burner shall have been closed, and while there is still sufficient' flame at the upper end of the main burner to effect the ignition of the stream of gas which will escape from the auxiliary burner. Now, as the rotation of the key C is continued (to the final position seen at FighQ) the upper end of the hole p is thrown out of line with the lower end of the bore of the auxiliary burner E; but an instant after the communication between the bore of said burner and the hole p shall have been cut off communication is established between the bore of said burner and the adjacent end of the small peripheral channel or recess fr, and through said recess or gasway a sufficient quantity of gas continues to be supplied through the radial hole q, so long. as the parts of the burner remain in that condition in which all supply of gas is cut oft from the main burner.

The object and advantage of the two radial holes p and q, arranged and operating in conjunction with the auxiliary burner in the manner just explained, is that at the initial lighting of or supply to the auxiliary burner an ample though always smaller supply of gas is aiforded to said burner, while at the same time, after the final adjustment of the key of the cock, said burner is afforded a smaller (but sufficient) supply through the hole q, which supply may be adjusted or regulated by the set-screw Z to suit the variable conditions under which self-lighting burners have to be applied in houses. v

Of course the precise relative arrangements of the parts shown need not be followed in all particulars, it only being necessary that the arrangement of the parts and passage-ways of the keybe substantially such as I have hereinbefore shown and described.

As already explained, the turning of the key C to completely cut off the supply of gas from the main burner does not interefere with the necessary constant supply of gas to the bore or gas-chamber m of said key, from which the supply is taken for the auxiliary or taper burner E.

It will be seen that in a self-lighting-burner contrivanoe such as herein shown and described not only may the case of the cock be made extremely simple and comparatively small, so as to render the whole contrivance compact and desirable in form, but furthermore all complication of gas-passages in the case is avoided, and furthermore, by reason of the unobstructed bore or gas-chamber m in the key C the main burner may be reduced in size in its body portion, (so as to deprive it of the heretofore necessary gaschamber,) and in consequence thereof the auxiliary burner may be placed, as shown, so close to the lower portion of the main burner that both burners may be brought practically within the space usually occupied by the body portion of the main burner alone. It will also be seen that by making the key hollow and forming it with the radial holes and gas-passages shown and described, and

providing its bore at one end with the setscrew Z, a perfectly efficient and simple means is afforded for regulating the supply of the gas to the auxiliary burner without the direct combination with the case of the cock of any supplemental devices for that purpose.

Having now so fully described the construction and operation of my improved selflighting burner that those skilled in the art can make and use a burner of that species to which my invention relates, either wholly or partially embracing the novel features of my invention, what I claim `as new, and desire to secure by Letters Patent, is-

In a self-lighting burner of the species above mentioned, the combination, with the main and auxiliary burners and the casing A, the latter provided with suitable ingress and egress extensions a and b, of the key C, formed with the central bore and gas-chamber m, also with the usual diametrically -arranged perforations n, and having the radially-arranged holes p q and the peripheral passage for cutting off from and resupplying to the auxiliary burner the gas, the whole constructed, arranged, and operating together in the manner and for the purposes herenbefore set forth. y

In witness whereof I have hereunto set my hand this 7th day of February, 1888.

IOS 

